Automatic shoemaking machine



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1,663,097 E. J. PRINDLE I AUTOMATIC SHOE MAKING MACHINE Original FiledJuly 31, 1916 18 Sheets-Sheet l3 March 20,1928. 1,663,097

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E. J. PRlNDLE AUTOMATIC SHOE MAKING MACHINE Original File 2d July 31,1916 18 Sheets-Sheet 18 www I Patented Mar. 20, 1928.

* mars EDWIN J. PRINDLE, OF EAST ORANGE, NEW JERSEY, ASSIGNOR, BY MESNEASSIGN- MENTS, TO UNITED SHOE MACHINERY COEPORATIOBLOF BOSTON,MASSACHUSETTS,

A CORPORATION OF NEW JERSEY.

AUTOMATIC SHOEMAKING MACHINE.

Application filed July 31, 1916, Serial No. 112,292. Renewed April 13,1927. l

The object of my invention has been to provide a shoe-making machinewhich shall have, among others, the following advan tages: 7

That of automatically presenting the shoe to a tool or machine which isto performv presenting a shoe to a tool or machine, causing said'shoe topass through a part only of its revolution, and of then withdrawing theshoe from the tool and presenti-ng the shoe to a. subsequent tool at anydesired period in the revolution of the shoe; and

That of being comparatively slmple and efiicient and readily, adjustablefrom one size in length or width 01 a shoe to another; and to such endsmy invention consists n the shoe-making machine hereinafter specified. g

In the accompanying drawings,

Fig. 1 is a side elevation of a machme embodying my invention;

Fig. 2 is a top plan view of Fig. 1;

Fig. 3 is a side elevation, partly in section of the shoe-supportingjack and its operating devices;

Fig. 4 is a horizontal section on the lme 4-4 of Fig. 3;

Fig. 5 is a horizontal section on the line 55 of Fig. 3;

Fig. 6 is a view like Fig. 5, showing the sliding block cut in a planehorizontally below its lever;

Fig. 7 is a vertical sectionon the line 77 of Fig. 4;

Fig. 8 is a cross-section on the line 88 of Fig. 4;

Fig. 9 is a cross-section on the line 9-9 of Fig. 4;

Fig. 10 is a horizontal section on the line 10-10 of Fig. 3, Plate 8being omitted;

Fig. 11 is a vertical section shown through the base of the machine;

Fig. 12 is a vertical section onthe line 12-12 of Fig. 11;

Fig. 13 is an elevational-view or" the carriage and cam plate, and, insection, the device for rotating the turret;

Fig. 14 is a rear elevation of Fig. 13;

Fig. 15 is a top plan view of Fig. 13;

Fig. 16 is a detail of the cam plate of the carriage, shown in position,when the tool on the turret is in operation upon the shoe; i Fig. 17 isa horizontal section on the line 1717 of Fig. 11; p

Fig. 18 is a side elevation of the automatic rotating device of thejack,- s'hown on an enlarged scale; i

Fig. 19 illustrates controlling devices;

Fig. 20 is a top plan view or the toolcontrolling device; V Y

Fig. 21 is aside elevation of Fig. 20; V I Fig. 22 is a plan view of thegearing for communicating motion from the shaft 94 to the shaft-30; v 1v Fig. 23 is a plan view of a cam gearing for rotating the jack proper;

Fig. 24 is a side elevation partly in section of one of the electricclutches; i

Fig. 25 is a sectional detail of Fig. 24;

Figs. 26, 27 and'28 are details of portions of the controlling devicesfor rotating the jack, etc.; i v Figs. 29 and 80 are a partial plan viewand a; vertical sectional view of gearing for rotating the pin whichengages the main path cam of the jack; and j Figs. 31 and 32 arerespectively a sideelevation and a plan view of the turret.

In the particular embodiment of my invention which I have chosen forillustration, the shoe is supported upon a jack, and the severalmachines; for operating upon. the shoe are supported upon a turret. The.tool operating upon the shoe is stationary, so far as bodily movementis concerned, during the operation on the shoe, and the jack so movesthe shoe as to cause the portion of the shoe being operated upon,say,the edge of the sole,to travel past the positionof the tool. Thejack, however, does not tip, so as to bring the edge, ofthe soleperpendicular to the tool and parallel to the line of travel past thetool, but the turret is tipped instead. Thus, while the tool is at afixed point, during its operation on the shoe, the tool is tipped aboutsuch point to accommodate itself to the various turns of the sole, andthus to be always in proper relation to the sole, the jack, however,seeing to it that the proper portion of the sole is in contact with thetool.

The tipping of the turret is accomplished automatically byelectric-controlling devices,

which are controlled by certain fingers. The

machine is also provided with electric-controlling devices, which removethe tool from the shoe in a proper direction (say, vertically, for thechannel), so as not to injure the shoe; which turn the shoe into theproper position to engage the tool before it is brought into contactwiththe tool, and which take proper account of the varying level of the shoesoles.

In carrying my invention into practice, I provide a base 1, on which aremounted the shoe-supporting jack and its operating devices. 7 The saidbase is provided with a vertical circular flange 2, on whose horizontalupper edge rests a table 3. Blocks & and

- 5, respectively, are secured on the upper side of the said table andsupport a plate .6, upon which is mounted the jack ,7. A plate 8 extendsfrom ashoulder on the block ,5 to'one on the block 4, parallel to thetable 3, and

n such plate is provided with a rabbeted regrooves formed in the guides.

cess 11 (Fig. 3), in which one of the two cams of my machine isremovably mounted. Such cam consists of a plate 12, to which are securedblocks 13 and 14, the outer block 13 beingof the shape of the recess 11,and the outer'andinner blocks being separated by a slot 15,01? uniformwidth, which is of the shape of the in-sole or of the out-sole of theshoe to be manufactured, according to the operations to be performedupon the shoe, and which forms a cam slot for a roller 16; The plate 12is secured in place by thumb-screws 12, threaded into the plate ,8,andhearing upon the said plate 12. The roller16 is mounted on a pin 17-(Fig. 8), which latter is secured in the end of a slide 18. Theslide 18is slidably mounted in a dovetail groove 19 (Fig. 7), formed in a lock20, which block is slidably mounted between guides 21,22 and 23, theguides extending across from'the block 5 to'the block (Figs- 4, 8, 9 and10). The block .20 has ribs 24; 9), which extend upward through slotsformed" between the guides 21 and 22 and 22 and 23, respectively, andsuch ribs have'plates 25 which are received in The block 20 thus hangsfrom the guides 21, 22 and 23, and is free to move along them. The pin.17 extends through the slide 18 and receives on its lower end a link 26(Fig. 5) whose op,- posite end is secured to a pin 27 on a sprocketchain 28 that runs over sprocket wheels 28 The sprocket wheels arefastened to pinions 28 (Fig. 3) that are journaled on studs 28 fixed inthe table 3. The pinions 28 are driven by a gear 29 keyed on a shaft 30.The shaft 30 is j ournaled in a sleeve 32 which is fixed in the table 3,and is held from rotation by arm 30*, the latter having a slot 30'engaged by a pin 30 extending be tween ears 3O upon the body of themachine. The pinions 28 are preferably of such diameter that on onerotation of the gear 29, the pin 27 will have traveled one completecycle of the length of the chain. Such gearing gives the pin 27 a motionapproximately like an ellipse, and thus causes the pin 17 to travelabout the cam slot 15, the link 26 permitting the difli'erence in motionbetween the path of travel of the pin 27 and the path of travel of thepin 17.

The motion of the pin 17 is divided into,

one component for the width of the shoe and one for the length, so thatadjustments. can be made to cause the machine, from the motion of thesingle cam slot 15, to operateupon shoes of varying widths and lengths,made from the model corresponding to the said cam. The slide 18, at itsend opposite to that carrying th-epin 17, carries a pin 37 (Fig. 1), onwhich is SWlVfilGCl'Zt block 38, which latter travels in a slide-way 39formed n a lever 40, the latter being'fulcrum'ed on a pin 41 that isfixed in alug 42-carried by the block 20. The lever 40 has, on its underside, a slide-way 43(Fig. 8), in which is oi marks 53 extendinglongitudinally of the cylinder. corresponding to the widths of models ofdifferent dimensions, and has a diagonal line 5%, by means of which theparticular row for a given width is indicated. This scale is the subjectof another applicationv for patent filed by me pan d not claimed herein.The block 16 is provided with a pointer 55, used in connection with thesaid row oi" marks, and the extension of the slideway 417 is providedwith lugs 56 and 57 between which thepointer can be clamped in adjustedposition by a thumbscrew 58. The slideway 47 of the T -slide 4-8 isreceived in aslideway 59 carried by a ring-slide 60, the latter beingmounted in a slideway 61. of a plate 62 that reciprocatesbetween gibs 63on the underside otthe block 20 (Figs. Sand 9). The ring-slide 60 issecured to, or forms part of, a ring 6 1, which embraces the verticalflange 2 on the frame.

. As the block 20 moves parallel to the length of the cam slot 15, themovements of the slide 18 in its guideway are solely due to variationsin the width of the last. jThe slide 18, therefore, gives the pivot 37moves iiu a I 4 ments which are 111 direct proportlon to the

